Thanos and Loki had an agreement. In exchange for the tesseract, he would supply the Chitauri army for Loki to invade Earth and become the supreme ruler. injustice 2 joker costumes He did gave Loki the mind controlling scepter which contains the mind stone which I would interpret as Thanos trying to experiment and test the powers of each stone and gaining information from everyone around that might help him reach his ultimate goal. By doing so, he might acquire valuable information on Earth by learning about their army and technological capacities. charlie and the chocolate factory anime Thanos is not interested in ruling the universe but he is interested in collecting all the infinity stones. In the comics, he wants to impress Lady Death but in the film,he wants to do it in order to save the universe. He once offered killing half of his own planet’s population (Titan) in order to save all of them. But of course, everyone dismissed this idea and thought he was mad...